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Home > Electrical & Electronics > Electrical Control System > 24Vdc Digital Input Module for Safety Instrumented System (SIS) Design ICS T8403

24Vdc Digital Input Module for Safety Instrumented System (SIS) Design ICS T8403

24Vdc Digital Input Module for Safety Instrumented System (SIS) Design ICS T8403 thumbnail-3

24Vdc Digital Input Module for Safety Instrumented System (SIS) Design ICS T8403 thumbnail-4

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24Vdc Digital Input Module for Safety Instrumented System (SIS) Design ICS T8403 photo-5

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Global universal model

Condition:

Other, Global universal model

Task:

Other, Global universal model

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Guizhou Yuanmiao Automation Equipment Co., Ltd.

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China

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Delivery time depends on order quantity.

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Material Other, Global universal model

Condition Other, Global universal model

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

Operating temperature -40℃~+85℃

Humidity 5%~95% (non-condensing)

Many products are not on the shelves yet, please contact us for more models.

ICS T8403 Product Overview

The ICS T8403 is a 24Vdc digital input module designed for Safety Instrumented Systems (SIS), adopting a Triple Module Redundancy (TMR) architecture. It features high reliability and powerful diagnostic functions, making it suitable for critical safety applications in harsh industrial environments.

Technical Parameters

Parameter	Specification
Input Channels	40 channels with Triple Module Redundancy (TMR)
Input Voltage	24VDC (typical), supporting 0V to 24VDC range
Input Current	2mA (typical)
Signal Type	Digital input
SOE Report Resolution	1 millisecond
Diagnostic Functions	Comprehensive diagnostics, line monitoring (open/short circuit)
Isolation	2500V pulse-resistant optoelectric/current isolation barrier
Safety Integrity Level	TÜV IEC 61508 SIL 3 certified
Operating Temperature	-40°C to +70°C
Storage Temperature	-55°C to +85°C
Relative Humidity	5% to 95% RH (non-condensing)
Installation Method	DIN rail mounting (compatible with Trusted® system racks)
Hot Swappable	Supported (under specific configurations)

Functional Features

High Reliability

The TMR architecture processes and verifies each digital input signal through three independent channels, using a "2-out-of-3" voting mechanism to eliminate single-point failures and prevent false trips.

High-Density Input

Provides 40 digital input channels for connecting up to 40 field digital input devices (e.g., switches and sensors), with each channel accurately reading 24Vdc signals.